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Bimetallic Fe and Co supported on the N‐doped mesoporous carbon frameworks with enhanced oxygen reduction reaction performance via high‐gravity technology
Author(s) -
Wu Guangping,
Shi Jinhua,
Dong Hongbo,
Nie Yao,
Wang Yanzhong,
Chen Yanjun,
Li Dan,
Linghu Yaoyao,
He Zhenfeng,
Wang Chao,
Guo Li
Publication year - 2021
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.202000572
Subject(s) - chemistry , electrocatalyst , catalysis , bimetallic strip , chronoamperometry , mesoporous material , x ray photoelectron spectroscopy , carbon black , electrochemistry , chemical engineering , carbon fibers , oxygen , nanotechnology , nuclear chemistry , cyclic voltammetry , electrode , organic chemistry , materials science , composite material , natural rubber , composite number , engineering
The exploitation of high‐efficiency, inexpensive, as well as durable electrocatalysts for the oxygen reduction reaction (ORR) is of vital importance for the commercialization of fuel cells. In this study, we prepared an efficient non‐precious ORR electrocatalyst via high‐gravity technology. The results of physical characterization revealed that the Fe atoms could be uniformly dispersed on the Fe/Co/N‐MCF catalyst via the high‐gravity technology. The X‐ray photoelectron spectroscopy demonstrated that the Fe can be combined with N from the ZIF‐67 to form the Fe‐N x structures, which has already been confirmed to be acted as validly ORR active sites. The electrochemical testing results showed that the Fe/Co/N‐MCF catalyst obtained via high gravity technology expressed a 24 mV positive than commercial Pt/C in terms of half‐wave potential. Moreover, Fe/Co/N‐MCF catalyst exhibited an excellent anti‐ethanol activity and durability, its current density only decays 2.6%, far lower than 23.3% of commercial Pt/C after 10,000 s chronoamperometry aging test.